Sanitary sand-blast helmet.



7/ Z? igiggg g/ W. DUNCAN & J. A. SPANGLER. 'SANITARY SAND BLAST HELMET.

APPLIOATIOE FILED APILB, 191s.

mwaa. Patented 0ct.14,1913.

WITNESSES l/W/ENTORS WELLIAIVI DUNCAN AND JOHN A. S?ANGLEB, OF ATEICA,INDIANA,

SANITARY SAND-BLAST} HELMET notation.

Specification of Letters Qatent/ Patented Got. 14, 1%13.

Application filed Apri13, 1913. Serial No. 758,625.

To all whom itmay concern:

following is a full, clear, and exact description.

This invention relates to helmets, and.

.more particularly to a helmet of improved construction designed for usein 'ltoundries to protect the workmen without interfering vwiththeirview of the work, and which, besides being light and neat in appearance,

will permit the proper supply of air to the Workman without causing asuction of the dust into the helmet.

Another object of the invention resides in the provision of a saudblasthelmet which is constructed of a plurality of novel partsjoinedj in anovel manner and capable of=bei% readily taken apart for cleaning orrepair, thus insuring the highest degree of sanitation with a consequentbetterment of working conditions.

With the above and other objects in view, theinvention resides moreparticularly in .the peculiar combinations and arrangements of partswhich will be illustrated as a preferred embodiment in the accompanyingdrawings and described in the specification.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which like characters of reference indicatecorresponding parts in all the views, and in which- Figure 1 is aperspective view of a sanitary; sandblast helmet constructed inaccordance-fwiththe invention; Fig. 2 is an enlarged vertical sectionalview of the improved helmet; Fig. 3 is an enlarged detail perspectiveView showing the manner of joining the extremities of an apron secur ingband employed with the device; and

Fig. 4 is an enlarged detailed sectional view showing the manner ofattaching the apron to the vizor, the same being taken through the vizorand apron.

In the illustrated embodiment of the in- -.vention, the numeral 10designates the body side'extensions 11, a curved rear extension and avizor 13 formed therewith, the VlZO I' having a depending front portion14 having an elongated rectangular opening producing a lookout The bodyof the helmet at the lower part of the crown is provided wit-h asurrrmnd v mg outstanding head 15, and the opposite sides of the vizorhave outwardly and upwardly extending plates riveted or 'otl -:rwisesecured thereto to produce lapovers 1 6, while the front portion of thevizor is provided with an out-standing bead 1'? spaced from the edge ofthe opening. An apron 18 is provided to inclose the head and neck of thewearer, such apron being made of canvas or other washable material andcut to fit over the extensions of the helmet body and having an openingdisposed over the opening in the front of the helmet bodyor vizorthereof. When the apron is thus applied to the helmet it overlies thebead 15, fits in the lapovers 16 and also overliesthe bead 17, and whenso disposed an open band 19 having a similar bead 20 is fitted on thecrown of the helmet over the apron so that its head will co-act with thebead of the crown and cause the material of the apron to be tightly heldin position. This clamping action is accomplished further by means ofloops 21 secured to the extremities of the flexible strip forming theband, said loops being engaged by overlapping and independently movableclips 22 and 23 having similar beads 24 and 25 to guide them inlongitudinal alinemcnt as they are shifted one with respect to theother. The outer extremity of each clip is provided with an aperturedcar 26 bent forwardly substantially at right angles. A bolt 27 isengaged through the apertures of the ears and by screwing home the nutof the bolt-the extremities of the band will be drawn together and inbinding contact with the crown of the helmet, so that displacement ofthe apron is prevented.

The portion of the apron which surrounds the front portion of the vizorengages over the bead 17 and together with a section of wire mesh 28,preferably of brass, is held in conformity to said front portion and itsbead through the instrumentality of a securing frame 29 having a bead 3Ocooperating with the head 17 to forms tight taint;

i stantially triangular-shaped and depending The beaded portions of thefront of the vizor, the screen and the securing frame are provided withspaced openings preferably located at the corners and intermediate theends of the upper and lowerportions of the bead so as to aline with eachother when the parts are assembled, whereby they may be held in positionby means of clamping bolts 31 having T-heads 32 held from rotation andthumb nuts 33 engaged thereon for securing the same without the use ofany special form of tool.

- head band 36 connected to the lower portions of the springs. This headband is made of washable material and is capable of adjustment throughthe instrumentality of a buckle connection 37 so as to draw the free orlower ends of the springs inwardly to reduce the size of the band or topermit the springs to move outward to increase the size of the band,this latter being the normal action of the springs.

In order to ventilate the helmet and permit the proper circulation ofair, the top of the helmet is provided with an opening 38 and aventilator cap 39 is attached thereover, said cap having a pluralityofopenings 40 permitting the proper circulation of air but preventing theentrance of foreign matter into the helmet through the opening 38. Theair is supplied to the helmet through the medium-of a pipe section 40which is connected to the front portion of the helmet body, as shown at41, and which is disposed in a rearwardly inclined posi tion extendingupwardly above the top of the helmet and having its lower end directeddownwardly so that air supplied to the pipe from a suitable conduitconnected thereto will pass into the helmet in such a.

manner as to prevent dust from entering through the screen and into thepipe. In this manner pro-per respiration is provided for, and since theventilator 39' forms an exit, the operator will be working under extremesanitary conditions at all times.

All of the metallic parts forming the helmet proper are stamped fromsheet alumi num, thus providing for the best protection consistent withlightness and durability, and by means of the openings provided, thefront or lookout of th helmet is made of ample size to allow theoperator a good view of his work at all times.

The parts may be readily assembled and taken apart or the deviceconveniently cleaned or repaired as the operator sees fit, and betterworking conditions are therefore assured.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is t- 1. A sanitarysandblasthelmet, comprisinga helmet body having a-surrounding cxtension including a vizor and afront portion depending therefrom, said front portion having a lookoutopening, a cover for said opening to exclude the entrance of dustandpermit objects to be visible therethrough, an apron overlapping theextension of the body and overlying a portion of the body, a clampingband for securing said apron on the body, said band having independentlymovable end portions, means connecting said end portions to draw theband in clamping position, and means for admitting air to the helmetbody and permitting the escape or" the air displaced thereby.

2. A sandblast helmet, comprising ahelmet body having side extensionsand a front portion having an opening, a screen covering for saidopening, a washable apron secured over said extensions and having anopening alining with the openings in the front p0;- tion of thehelmet,,a clamping'bandaround the lower portion of the crown of thehelmet to secure the apron thereto, said crown and band havingco-acting' beads between which the apron is-held, and means connectingthe free ends of the band to draw the same together. 3. -A sandblasthelmet of the character de scribed, comprising an aluminum helmet bodyhaving side extensions and a front por tion having an opening, a screencovering for said opening, means detachably securing said screencovering in position, a washable apron secured over said extensions andhaving an opening alining with the opening in the front portion of thehelmet, and a removable frame for securing said apron and screen aroundthe opening to form a tight joint.

4. A sandblast helmet of the character described, comprising an aluminumhelmet body having side extensions and a front portion having anopening, a screen covering; for said opening, means detachably securingsaid screen covering in position, a washable apron secured over saidextensions andihav ing an opening alining with the opening in i thefront portion of the helmet, and a clamp' ing band around the lowerportion of the crown of the helmet to secure the apron thereto.

5. A sandblast helmet of the character int ise

apron secured over said extensions and having an opening alining withthe opening in the front portion of the helmet, a removable frame forsecuring said apron and screen around th opening to form a tight joint,a damping band securing the apron around the helmet body, said bodyhaving a vizor with side lapovers receiving the apron therein, and ahead band connected interiorly to the helmet body.

6. A sandblast helmet of the character described, comprising an aluminumhelmet body having side extensions and a front portion having anopening, a screen covering for said opening, means detachably securingsaid screen covering in position, a washable apron secured over saidextensions and having an opening alining with the opening in the frontportion of the helmet, a removable,

frame for securing said apron and screen 26 around the opening to form atight joint, a clamping band securing the apron around the helmet body,said body having a Vizor with side lapovers receiving the aprontl'ierein, and a head band connected interiorly to the helmet body, saidhead band comprising an adjustable member and springs supp-orb ing thesame.

In testimony whereof we, lViLLIAa: CAN andJOI-IN A. SrANoLna, have ournames to this specification in the ence of two subscribing witnesses.

WVILLIAM DUNCAN. JOHN A. SPANGLEL.

' Witnesses:

ALVA LEE BEEVER, VVARD MoCURnY.

